Fix Bug 2292: Invalid Member VNF index in Manual Scaling after NS Update remove operation

	- Will get member vnf index value from vnfinstances api instead
	  of nsinstances api in manual scaling.
	- Also made code refactoring in other components to avoid linting issue

Change-Id: I30de65c6fe23ddbf560ab45a8505759c4adb5978
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>
diff --git a/src/app/utilities/vm-migration/VmMigrationComponent.ts b/src/app/utilities/vm-migration/VmMigrationComponent.ts
index e53ea11..b629497 100644
--- a/src/app/utilities/vm-migration/VmMigrationComponent.ts
+++ b/src/app/utilities/vm-migration/VmMigrationComponent.ts
@@ -29,7 +29,7 @@
 import { VMMIGRATION } from 'NSInstanceModel';
 import { RestService } from 'RestService';
 import { SharedService } from 'SharedService';
-import { VDUR, VNFInstanceDetails } from 'VNFInstanceModel';
+import { InstanceData, VDUR, VNFInstanceDetails } from 'VNFInstanceModel';
 
 /**
  * Creating component
@@ -115,30 +115,32 @@
 
     /** Getting MemberVnfIndex using NSDescriptor API @public */
     public getMemberVnfIndex(): void {
-        const vnfInstanceData: {}[] = [];
         this.isLoadingResults = true;
+        const vnfInstanceData: {}[] = [];
         this.restService.getResource(environment.VNFINSTANCES_URL).subscribe((vnfInstancesData: VNFInstanceDetails[]): void => {
             vnfInstancesData.forEach((vnfData: VNFInstanceDetails): void => {
+                const vnfdRef: string = 'vnfd-ref';
+                const memberIndex: string = 'member-vnf-index-ref';
+                const nsrId: string = 'nsr-id-ref';
                 const vnfDataObj: {} =
                 {
-                    VNFD: vnfData['vnfd-ref'],
+                    // eslint-disable-next-line security/detect-object-injection
+                    VNFD: vnfData[vnfdRef],
                     VNFInstanceId: vnfData._id,
-                    MemberIndex: vnfData['member-vnf-index-ref'],
-                    NS: vnfData['nsr-id-ref']
+                    // eslint-disable-next-line security/detect-object-injection
+                    MemberIndex: vnfData[memberIndex],
+                    // eslint-disable-next-line security/detect-object-injection
+                    NS: vnfData[nsrId]
                 };
                 vnfInstanceData.push(vnfDataObj);
             });
             const nsId: string = 'NS';
             // eslint-disable-next-line security/detect-object-injection
             this.nsIdFilteredData = vnfInstanceData.filter((vnfdData: {}[]): boolean => vnfdData[nsId] === this.params.id);
-            this.nsIdFilteredData.forEach((resVNF: {}[]): void => {
-                const memberIndex: string = 'MemberIndex';
-                const vnfinstanceID: string = 'VNFInstanceId';
+            this.nsIdFilteredData.forEach((resVNF: InstanceData): void => {
                 const assignMemberIndex: {} = {
-                    // eslint-disable-next-line security/detect-object-injection
-                    id: resVNF[memberIndex],
-                    // eslint-disable-next-line security/detect-object-injection
-                    vnfinstanceId: resVNF[vnfinstanceID]
+                    id: resVNF.MemberIndex,
+                    vnfinstanceId: resVNF.VNFInstanceId
                 };
                 this.memberVnfIndex.push(assignMemberIndex);
             });
@@ -170,7 +172,6 @@
                             {
                                 'count-index': vdu['count-index'],
                                 VDU: vdu['vdu-id-ref']
-
                             };
                             vnfInstanceData.push(vnfInstanceDataObj);
                         });